PRIVATE_SYMBOLS;
+/*----- Python version compatibility hacks --------------------------------*/
+
+/* The handy `Py_TYPE' and `Py_SIZE' macros turned up in 2.6. Define them if
+ * they're not already here.
+ */
+#ifndef Py_TYPE
+# define Py_TYPE(obj) (((PyObject *)(obj))->ob_type)
+#endif
+#ifndef Py_SIZE
+# define Py_SIZE(obj) (((PyVarObject *)(obj))->ob_size)
+#endif
+
+/* Python 3 added internal structure to the various object headers, and
+ * defined a new macro `PyVarObject_HEAD_INIT' to initialize variable-length
+ * static instances correctly. Define it if it's not already here.
+ */
+#ifndef PyVarObject_HEAD_INIT
+# define PyVarObject_HEAD_INIT(super, sz) PyObject_HEAD_INIT(super) sz,
+#endif
+
+/* Python 3.2 changed the type of hash values, so paper over this annoying
+ * difference.
+ */
+#if PY_VERSION_HEX < 0x03020000
+ typedef long Py_hash_t;
+#endif
+
+/* Plain octet strings. Python 2 calls these `str', while Python 3 calls
+ * them `bytes'. We call them `bin' here, and define the following.
+ *
+ * * `BINOBJ' is the C type of a `bin' object.
+ * * `BIN_TYPE' is the Python `type' object for `bin'.
+ * * `BIN_CHECK(OBJ)' is true if OBJ is a `bin' object.
+ * * `BIN_PTR(OBJ)' points to the first octet of OBJ, without checking!
+ * * `BIN_LEN(OBJ)' yields the length of OBJ in octets, without checking!
+ * * `BIN_FROMSTR(STR)' makes a `bin' object from a null-terminated string.
+ * * `BIN_FORMAT(FMT, ARGS...)' and `BIN_VFORMAT(FMT, AP)' make a `bin'
+ * object from a `printf'-like format string and arguments.
+ * * `BIN_PREPAREWRITE(OBJ, PTR, LEN)' prepares to make a `bin' object: it
+ * sets PTR to point to a buffer of LEN bytes; call `BIN_DONEWRITE' when
+ * finished. The variable OBJ will eventually be the resulting object,
+ * but until `BIN_DONEWRITE' is called, it may in fact be some different
+ * object.
+ * * `BIN_DONEWRITE(OBJ, LEN)' completes making a `bin' object: it adjusts
+ * its length to be LEN, which must not be larger than the LEN given to
+ * `BIN_PREPAREWRITE', and sets OBJ to point to the finished object.
+ * * `BIN_SETLEN(OBJ, LEN)' adjusts the length of OBJ downwards to LEN,
+ * without checking!
+ # * `Y' is a format character for `PyArg_ParseTuple...' for retrieving a
+ * null-terminated octet string from a `bin' object.
+ # * `YN' is a format character for `PyArg_ParseTuple...' for retrieving an
+ * octet string and length from any sort-of vaguely binary-ish object.
+ */
+# define BINOBJ PyStringObject
+# define BIN_TYPE PyString_Type
+# define BIN_CHECK(obj) PyString_Check(obj)
+# define BIN_PTR(obj) PyString_AS_STRING(obj)
+# define BIN_LEN(obj) PyString_GET_SIZE(obj)
+# define BIN_FROMSTR(str) PyString_FromString(str)
+# define BIN_FROMSTRLEN(str, len) PyString_FromStringAndSize(str, len)
+# define BIN_FORMAT PyString_FromFormat
+# define BIN_VFORMAT PyString_FromFormatV
+# define BIN_PREPAREWRITE(obj, ptr, sz) do { \
+ (obj) = PyString_FromStringAndSize(0, (sz)); \
+ (ptr) = PyString_AS_STRING(obj); \
+ } while (0)
+# define BIN_DONEWRITE(obj, sz) do Py_SIZE(obj) = (sz); while (0)
+# define BIN_SETLEN(obj, len) do Py_SIZE(obj) = (len); while (0)
+# define Y "s"
+# define YN "s#"
+
+/* Text strings. Both Python 2 and Python 3 call these `str', but they're
+ * very different because a Python 3 `str' is Unicode inside. When dealing
+ * with Python 3 text, the data is UTF-8 encoded. We call them `text' here,
+ * and define the following.
+ *
+ * * `TEXTOBJ' is the C type of a `text' object.
+ * * `TEXT_TYPE' is the Python `type' object for `text'.
+ * * `TEXT_CHECK(OBJ)' is true if OBJ is a `text' object.
+ * * `TEXT_STR(OBJ)' points to the first byte of a null-terminated string
+ * OBJ, or is null.
+ * * `TEXT_PTR(OBJ)' points to the first byte of OBJ, without checking!
+ * * `TEXT_LEN(OBJ)' yields the length of OBJ in octets, without checking!
+ * * `TEXT_FROMSTR(STR)' makes a `text' object from a null-terminated
+ * string.
+ * * `TEXT_FORMAT(FMT, ARGS...)' and `TEST_VFORMAT(FMT, AP)' make a `text'
+ * object from a `printf'-like format string and arguments.
+ * * `TEXT_PREPAREWRITE(OBJ, PTR, LEN)' prepares to make a `text' object:
+ * it sets PTR to point to a buffer of LEN bytes; call `TEXT_DONEWRITE'
+ * when finished. The variable OBJ will eventually be the resulting
+ * object, but until `TEXT_DONEWRITE' is called, it may in fact be some
+ * different object.
+ * * `TEXT_DONEWRITE(OBJ, LEN)' completes making a `text' object: it
+ * adjusts its length to be LEN, which must not be larger than the LEN
+ * given to `TEXT_PREPAREWRITE', and sets OBJ to point to the finished
+ * object.
+ *
+ * (Use `s' and `s#' in `PyArg_ParseTuple...'.)
+ */
+# define TEXTOBJ PyStringObject
+# define TEXT_TYPE PyString_Type
+# define TEXT_CHECK(obj) PyString_Check(obj)
+# define TEXT_PTR(obj) PyString_AS_STRING(obj)
+# define TEXT_STR(obj) PyString_AsString(obj)
+# define TEXT_PTRLEN(obj, ptr, len) do { \
+ (ptr) = PyString_AS_STRING(obj); \
+ (len) = PyString_GET_SIZE(obj); \
+ } while (0)
+# define TEXT_FORMAT PyString_FromFormat
+# define TEXT_VFORMAT PyString_FromFormatV
+# define TEXT_PREPAREWRITE(obj, ptr, sz) do { \
+ (obj) = PyString_FromStringAndSize(0, (sz)); \
+ (ptr) = PyString_AS_STRING(obj); \
+ } while (0)
+# define TEXT_DONEWRITE(obj, sz) do { Py_SIZE(obj) = (sz); } while (0)
+# define TEXT_FROMSTR(str) PyString_FromString(str)
+# define TEXT_FROMSTRLEN(str, len) PyString_FromStringAndSize(str, len)
+
/*----- Utilities for returning values and exceptions ---------------------*/
/* Returning values. */
/* Input conversion functions for standard kinds of objects, with overflow
* checking where applicable.
*/
+struct bin { const void *p; Py_ssize_t sz; };
extern int convulong(PyObject *, void *); /* unsigned long */
extern int convuint(PyObject *, void *); /* unsigned int */
extern int convszt(PyObject *, void *); /* size_t */
extern int convbool(PyObject *, void *); /* bool */
+extern int convbin(PyObject *, void *); /* read buffer holding bytes */
/* Output conversions. */
extern PyObject *getbool(int); /* bool */
/*----- Miscellaneous utilities -------------------------------------------*/
-#define FREEOBJ(obj) \
- (((PyObject *)(obj))->ob_type->tp_free((PyObject *)(obj)))
+#define FREEOBJ(obj) (Py_TYPE(obj)->tp_free((PyObject *)(obj)))
/* Actually free OBJ, e.g., in a deallocation function. */
extern PyObject *abstract_pynew(PyTypeObject *, PyObject *, PyObject *);
/* A `tp_new' function which refuses to make the object. */
+extern PyObject *enrich_compare(int /*op*/, int /*cmp*/);
+ /* Use a traditional compare-against-zero comparison result CMP to answer a
+ * modern Python `tp_richcompare' operation OP.
+ */
+
#ifndef CONVERT_CAREFULLY
# define CONVERT_CAREFULLY(newty, expty, obj) \
(!sizeof(*(expty *)0 = (obj)) + (/*unconst*/ newty)(obj))
/*----- Populating modules ------------------------------------------------*/
extern PyObject *modname;
- /* The overall module name. Set this with `PyString_FromString'. */
+ /* The overall module name. Set this with `TEXT_FROMSTR'. */
extern PyObject *home_module;
/* The overall module object. */
struct nameval { const char *name; unsigned f; unsigned long value; };
#define CF_SIGNED 1u
extern void setconstants(PyObject *, const struct nameval *);
+#define CONST(x) { #x, (x) >= 0 ? 0 : CF_SIGNED, x }
+#define CONSTFLAG(f, x) { #x, f, x }
#define INSEXC(name, var, base, meth) \
INSERT(name, var = mkexc(mod, base, name, meth))
/*----- Generic mapping support -------------------------------------------*/
+/* Operations table. ME is the mapping object throughout. */
+typedef struct gmap_ops {
+ size_t isz; /* iterator size */
+
+ void *(*lookup)(PyObject *me, PyObject *key, unsigned *f);
+ /* Lookup the KEY. If it is found, return an entry pointer for it; if F
+ * is not null, set *F nonzero. Otherwise, if F is null, return a null
+ * pointer (without setting a pending exception); if F is not null, then
+ * set *F zero and return a fresh entry pointer. Return null on a Python
+ * exception (the caller will notice the difference.)
+ */
+
+ void (*iter_init)(PyObject *me, void *i);
+ /* Initialize an iterator at I. */
+
+ void *(*iter_next)(PyObject *me, void *i);
+ /* Return an entry pointer for a different item, or null if all have been
+ * visited.
+ */
+
+ PyObject *(*entry_key)(PyObject *me, void *e);
+ /* Return the key object for a mapping entry. */
+
+ PyObject *(*entry_value)(PyObject *me, void *e);
+ /* Return the value object for a mapping entry. */
+
+ int (*set_entry)(PyObject *me, void *e, PyObject *val);
+ /* Modify the entry by storing VAL in its place. Return 0 on success,
+ * or -1 on a Python error.
+ */
+
+ int (*del_entry)(PyObject *me, void *e);
+ /* Delete the entry. (It may be necessary to delete a freshly allocated
+ * entry, e.g., if `set_entry' failed.) Return 0 on success, or -1 on a
+ * Python error.
+ */
+} gmap_ops;
+
+/* The intrusion at the head of a mapping object. */
+#define GMAP_PYOBJ_HEAD \
+ PyObject_HEAD \
+ const gmap_ops *gmops;
+
+typedef struct gmap_pyobj {
+ GMAP_PYOBJ_HEAD
+} gmap_pyobj;
+#define GMAP_OPS(obj) (((gmap_pyobj *)(obj))->gmops)
+ /* Discover the operations from a mapping object. */
+
/* Mapping methods. */
#define GMAP_METMNAME(func) gmapmeth_##func
#define GMAP_METH(func, doc) STD_METHOD(GMAP_METMNAME, func, 0, doc)
#define GMAP_NAMETHDECL(func, doc) \
extern PyObject *gmapmeth_##func(PyObject *);
-#define GMAP_DOROMETHODS(METH, KWMETH, NAMETH) \
- METH (has_key, "D.has_key(KEY) -> BOOL") \
- NAMETH(keys, "D.keys() -> LIST") \
- NAMETH(values, "D.values() -> LIST") \
- NAMETH(items, "D.items() -> LIST") \
- NAMETH(iterkeys, "D.iterkeys() -> ITER") \
- NAMETH(itervalues, "D.itervalues() -> ITER") \
- NAMETH(iteritems, "D.iteritems() -> ITER") \
- KWMETH(get, "D.get(KEY, [default = None]) -> VALUE")
+# define GMAP_DOROMETHODS(METH, KWMETH, NAMETH) \
+ METH (has_key, "D.has_key(KEY) -> BOOL") \
+ NAMETH(keys, "D.keys() -> LIST") \
+ NAMETH(values, "D.values() -> LIST") \
+ NAMETH(items, "D.items() -> LIST") \
+ NAMETH(iterkeys, "D.iterkeys() -> ITER") \
+ NAMETH(itervalues, "D.itervalues() -> ITER") \
+ NAMETH(iteritems, "D.iteritems() -> ITER") \
+ KWMETH(get, "D.get(KEY, [default = None]) -> VALUE")
#define GMAP_DOMETHODS(METH, KWMETH, NAMETH) \
GMAP_DOROMETHODS(METH, KWMETH, NAMETH) \
KWMETH(setdefault, "D.setdefault(K, [default = None]) -> VALUE") \
KWMETH(pop, "D.pop(KEY, [default = <error>]) -> VALUE") \
NAMETH(popitem, "D.popitem() -> (KEY, VALUE)") \
- METH (update, "D.update(MAP)")
+ KWMETH(update, "D.update(MAP)")
GMAP_DOMETHODS(GMAP_METHDECL, GMAP_KWMETHDECL, GMAP_NAMETHDECL)
#define GMAP_ROMETHODS GMAP_DOROMETHODS(GMAP_METH, GMAP_KWMETH, GMAP_NAMETH)
/* Mapping protocol implementation. */
extern Py_ssize_t gmap_pysize(PyObject *); /* for `mp_length' */
+extern PyObject *gmap_pyiter(PyObject *); /* for `tp_iter' */
+extern PyObject *gmap_pylookup(PyObject *, PyObject *); /* for `mp_subscript' */
+extern int gmap_pystore(PyObject *, PyObject *, PyObject *); /* for `mp_ass_subscript' */
+extern int gmap_pyhaskey(PyObject *, PyObject *); /* for `sq_contains' */
extern const PySequenceMethods gmap_pysequence; /* for `tp_as_sequence' */
+extern const PyMethodDef gmapro_pymethods[]; /* read-only methods */
extern const PyMethodDef gmap_pymethods[]; /* all the standard methods */
/*----- That's all, folks -------------------------------------------------*/
~mdw / pyke / blobdiff